1  // Test multiple nix dependencies
 2  // Uses: zlib, openssl, curl (curl depends on both)
 3  
 4  #include <curl/curl.h>
 5  #include <openssl/sha.h>
 6  #include <stdio.h>
 7  #include <string.h>
 8  #include <zlib.h>
 9  
10  // Callback for curl - just count bytes
11  // cppcheck-suppress unusedFunction ; referenced by curl via function pointer
12  static size_t write_callback(void *contents, size_t size, size_t nmemb,
13                               void *userp) {
14    size_t *total = (size_t *)userp;
15    *total += size * nmemb;
16    return size * nmemb;
17  }
18  
19  int main(void) {
20    printf("=== Multi-dependency test ===\n\n");
21  
22    // 1. zlib: compress something
23    printf("1. zlib %s\n", zlibVersion());
24    const char *input = "Hello from multi-dep test!";
25    char compressed[256];
26    uLongf comp_len = sizeof(compressed);
27    if (compress((Bytef *)compressed, &comp_len, (const Bytef *)input,
28                 strlen(input) + 1) == Z_OK) {
29      printf("   Compressed %zu -> %lu bytes\n", strlen(input) + 1, comp_len);
30    }
31  
32    // 2. openssl: hash something
33    printf("\n2. OpenSSL %s\n", OPENSSL_VERSION_TEXT);
34    unsigned char hash[SHA256_DIGEST_LENGTH];
35    SHA256((const unsigned char *)input, strlen(input), hash);
36    printf("   SHA256: ");
37    for (int i = 0; i < 8; i++)
38      printf("%02x", hash[i]);
39    printf("...\n");
40  
41    // 3. curl: check version (don't actually fetch)
42    printf("\n3. curl %s\n", curl_version());
43    curl_global_init(CURL_GLOBAL_DEFAULT);
44    CURL *curl = curl_easy_init();
45    if (curl) {
46      printf("   curl_easy_init() OK\n");
47      curl_easy_cleanup(curl);
48    }
49    curl_global_cleanup();
50  
51    printf("\n=== All dependencies working ===\n");
52    return 0;
53  }